2021년 10월 - October 2021
| 날짜 / Date | 행사 / Event | 시간 / Time* | 장소 / Place | 링크 / Link | |
| 📸 | 2021.10.05 | 스트릿 우먼 파이터 Ep.6 | 10:20 PM | MNET | WATCH |
| 🎥 | 2021.10.09 | [Teaser] LOONA (今月の少女) "HULA HOOP" | 12:00 AM | Youtube | WATCH |
| 🎥 | 2021.10.15 | LOONA (今月の少女) "HULA HOOP" MV | 12:00 AM | Youtube | WATCH |
| 📲 | 2021.10.16 | Orbit Ring: Summer Package 2021 | - | LINE App | - |
| 📲 | 2021.10.17 | LOONA Online Meet & Greet #1 | 2:00 PM | ZOOM | - |
| 🎥 | 2021.10.17 | 닥터프렌즈 #1 | - | Youtube | WATCH |
| 🎥 | 2021.10.19 | [Teaser] LOONA (今月の少女) "StarSeed～カクセイ～" | 12:00 AM | Youtube | WATCH |
| 🎂 | 2021.10.19 | 희진 생일 / Heejin Birthday | - | - | ♥ |
| 🎂 | 2021.10.20 | 츄 생일 / Chuu Birthday | - | - | ♥ |
| 💿 | 2021.10.20 | HULA HOOP/StarSeed〜カクセイ〜 | - | CD/DVD | BUY |
| 🎥 | 2021.10.21 | Yves Instagram Live | 3:40 PM | WATCH | |
| 🎥 | 2021.10.21 | Hula Hoop Challenge - Yves | - | Youtube | WATCH |
| 🎥 | 2021.10.21 | 닥터프렌즈 #2 | 11:00 PM | Youtube | WATCH |
| 📻 | 2021.10.25 | Today's Morning K-POP - LOONA Messages | 8:00 AM | InterFM89.7 | LISTEN |
| 💿 | 2021.10.27 | LOONA - Not Friends (Remix) | 12:00 PM | - | LISTEN |
| 🎥 | 2021.10.27 | Yves Instagram Live | 3:00 PM | WATCH | |
| 🎥 | 2021.10.29 | "HULA HOOP" MV Reaction | 12:00 PM | Youtube | WATCH |
| 🎤 | 2021.10.30 | World is One 2021 콘서트 | 8:00 PM | Youtube | WATCH |
* KST / Korean time
이달의 소녀
[&] 프로모션 활동에 / Promotion activities →
HULA HOOP/StarSeed〜カクセイ〜 프로모션 일정 →